Processes for the preparation of titaniumphthalocyanine Type X
AssigneeXerox Corporation
InventorsJames D. Mayo, James M. Duff, Terry L. Bluhm, Cheng K. Hsiao
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Abstract
A process for the preparation of titanyl phthalocyanine Type X which comprises dissolving titanyl phthalocyanine Type I in a solution of trifluoroacetic acid and methylene chloride; adding the resultant solution to a solvent enabling precipitation of Type X titanyl phthalocyanine; separating the titanyl phthalocyanine Type X from the solution; followed by a first washing with an organic solvent and a second washing with water; and thereafter a solvent treatment with fluorobenzene.
Claims20
A process for the preparation of titanyl phthalocyanine Type X consisting of dissolving titanyl phthalocyanine Type I in a solution of trifluoroacetic acid and methylene chloride;
- adding the resultant solution to a solvent mixture of alcohol and water in a ratio range of from 60:40 to 35:65 enabling the precipitation of Type X titanyl phthalocyanine;
- separating the titanyl phthalocyanine Type X from the solution;
- followed by a first washing with an aliphatic alkane alcohol wherein alkane contains from 1 to about 10 carbon atoms and a second washing with water;
- and thereafter a solvent treatment with fluorobenzene.
A process for the preparation of titanyl phthalocyanine consisting of dissolving a titanyl phthalocyanine in a solution of trihaloacetic acid and an alkylene halide wherein alkylene contains from 1 to about 6 carbon atoms;
- adding the solution to a stirred mixture of an alcohol and water in a ratio range of from 60:40 to 35:65 whereby a precipitate results;
- separating the titanyl phthalocyanine Type X from the solution followed by an optional first washing and thereafter a second washing with fluorobenzene.
A process for the preparation of titanyl phthalocyanine Type X consisting of dissolving titanyl phthalocyanine Type I in a solution of trifluoroacetic acid and methylene chloride;
- adding the solution to a stirred mixture of an aliphatic alkane alcohol wherein alkane contains from 1 to 10 carbon atoms and water in a ratio range of from 60:40 to 35:65 whereby a precipitate results;
- recovering the desired titanyl phthalocyanine Type X;
- followed by washing with fluorobenzene.
A process for the preparation of titanyl phthalocyanine Type X consisting of the reaction of a titanium alkoxide with diiminoisoindoline in a solvent of chloronaphthalene;
- dissolving the obtained Type I titanyl phthalocyanine in solvent comprised of trifluoroacetic acid and methylene chloride;
- reprecipitating the dissolved pigment by addition to a stirred mixture of methanol and water in a ratio range of from 60:40 to 35:65;
- and subsequently washing the Type X titanyl phthalocyanine obtained with fluorobenzene.
Dependencies are inferred from the claim text.